P1248 2018 Chevrolet Silverado Code - Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
Quick Answer
The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1248 2018 Chevrolet Silverado indicates Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1248 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1248 2018 Chevrolet Silverado?
- Faulty Fuel Injector 1
- Fuel Injector 1 harness is open or shorted
- Fuel Injector 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1248 2018 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1248 2018 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1248 2018 Chevrolet Silverado Code
1. What does the OBDII code P1248 mean on a 2018 Chevrolet Silverado?
P1248 indicates that the Injector 1 Positive Voltage Control Circuit is shorted to the control circuit, causing a disruption in the injector's operation.
2. What are the common symptoms of code P1248 in a 2018 Chevrolet Silverado?
Symptoms may include rough idling, misfires, reduced engine performance, poor fuel economy, and the Check Engine Light turning on.
3. What causes the P1248 code on a 2018 Chevrolet Silverado?
Common causes include damaged wiring, a short circuit between the injector's positive voltage and control circuits, a faulty fuel injector, or a malfunctioning engine control module (ECM).
4. Can I drive my 2018 Chevrolet Silverado with code P1248?
While it might be possible to drive, it is not recommended as the engine may misfire or run poorly, potentially causing further damage to components.
5. How do I diagnose the P1248 code on a 2018 Chevrolet Silverado?
Start by inspecting the injector wiring and connectors for damage or shorts. Use a multimeter to check for proper voltage and resistance. Scan the ECM for related codes and test the injector itself.
6. How do I fix the P1248 code on a 2018 Chevrolet Silverado?
Repairs may involve replacing damaged wiring, repairing short circuits, replacing the faulty fuel injector, or reprogramming/repairing the ECM if necessary.
7. How much does it cost to fix a P1248 code on a 2018 Chevrolet Silverado?
Costs vary, but replacing a fuel injector typically ranges from $150 to $400, while wiring repairs or ECM reprogramming can cost between $100 and $500 depending on the issue.
8. Could a clogged fuel injector cause code P1248?
No, a clogged injector would not cause this specific code, as P1248 relates to an electrical short in the circuit, not a mechanical blockage.
9. How can I prevent the P1248 code from occurring on my 2018 Chevrolet Silverado?
Regular maintenance, inspecting injector wiring for wear, and avoiding exposure to moisture or debris can help prevent electrical issues.
10. Do I need to clear the code after fixing the P1248 issue?
Yes, after making repairs, use an OBDII scanner to clear the code and confirm that it does not return during a test drive.
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